Associação dos antígenos leucocitários humanos com a ausência de resposta humoral à vacina da hepatite B em pacientes renais crônicos hemodialisados Association of humans leucocitary antigens with humoral nonresponsive to hepatitis B vaccine in chronic hemodialysis patients

Vaccination using surface antigen from hepatitis B virus has not been successfully responded by hemodialysis patients. The present study was aimed at assessing a possible relationship between human leukocyte antigens and the low production of protective antibodies (anti-HbS) against the surface antigen from hepatitis B by patients with chronic renal failure submitted to hemodialysis programs. The antigens HLA-DR and HLA-DQ were identified in 76 hemodialysis patients through classic microlymphotoxicity. Our results showed that 34.2% of the patients were non-responsive to the vaccine VHB. The most frequent HLA specificity were: HLA-DR3, DR-7 and DQ2 with a significant association for HLA-DR3 (p=0.0025; OR 5.1; IC 95% 1.36-19.10). Such data suggest an association between genes from HLA class II antigens and the humoral non-response to the vaccine VHB.